Tape Inspection

11-5835-243-34/EE641-AA-MMl-010/E154

MTT/TO 31S3-4-110-1

noticeable gaps between wraps of tape on the tape

adequate ventilation whenever you use

reel. This condition can be corrected by respooling

TRICHLOROTRIFLUOROETHANE.

the tape. To respond, run tape from beginning of

Do not use solvent near heat or open

tape (BOT) to end of tape (EOT) and back to BOT.

TRICHLOROTRIFLUORO-

flame.

b. Inspect tape for creases or wear, and replace

ETHANE will not burn, but heat changes

tape if found.

the gas into poisonous, irritating fumes.

DO NOT breathe the fumes or vapors.

3-39. Magnetic Tape Replacement

TRICHLOROTRIFLUOROETHANE

NOTE

dissolves natural skin oils. DO NOT get

Inspect bottom of reel shaft for presence

the solvent on your skin. Use gloves,

of a small shim placed on top of a larger

sleeves and an apron which the solvent

shim. One or both may have been in-

cannot penetrate. If the solvent is taken

tentionally removed with old reel hub.

internally, see a doctor immediately.

Ensure that two flanged bearings are

e. Clean all removed metal parts, except mirror,

installed in center (one each side) of hub.

using a clean, lint-free cloth and cleaning solvent

a. Ensure that two flanged bearings are installed

(NSN 6850-00-105-3084). Use a stiff-bristle brush

in center (one each side) or reel hub.

to dislodge any stubborn accumulations of magnetic

b. Place reel hub on reel shaft, then place shim on

tape residue or grime. Dry all metal parts using

top of reel shaft and secure in position with

moisture-free compressed air at 20 psig maximum.

retaining ring.

f. Clean mirror by wiping with clean, lint-free

cloth moistened with a solution of mild liquid

NOTE

detergent and warm water. Remove detergent

Ensure that ridged side of elastic belt

residue by wiping mirror with a clean, lint-free cloth

rests in grooves on belt idlers and floating

moistened with clear warm water. Dry mirror using

pressure roller.

clean, dry, lint-free cloth.

c. Place elastic belt around belt idlers (A, fig.

3-13).

3-38. Tape Inspection

d. Place elastic belt around take-up reel hub (B,

a. When a tape cartridge is disassembled, inspect

fig. 3-13).

tapes for "stepping". "Stepping" is a nonunifor-

mity of circular tape wrap or the condition of

3-29